Overview - Infotainment System

MMI Infotainment Is Available In The Following Equipment Levels:

MMI Minimum Equipment

• Information Electronics Control Module 1 -J794- in the instrument panel holds the CD player/SD card reader
• Multimedia System Control Head -E380- in the center console
• Front Information Display Control Head -J685- in center of the instrument panel
• CD Changer -R41- in glove compartment, (7A6)
• Optional External Audio Source Connection -R199- (interface) in the glove compartment (UF7)
• External Audio Source Connection -R199- (AUX IN jack) in the center console storage compartment
• Optional Digital Sound System Control Module -J525- in the luggage compartment (left rear).
• Sound system: basic plus/standard/Bang & Olufsen (8RX/9VD/9VK)
• Radio -R- inside the luggage compartment, on the left side and in the rear (8YQ)
• Digital Radio -R147- integrated in the Radio -R- (QV3)
• Optional cell phone preparation (9ZF)
• Optional Bluetooth hands-free calling (9ZX)
• Optional multifunction steering wheel

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1. Front Information Display Control Head -J685- in center of the instrument panel
2. Information Electronics Control Module 1 -J794- inside the instrument panel
3. Multimedia System Control Head -E380- in the center console
4. MOST bus
5. Data Bus On Board Diagnostic Interface -J533- Behind the Glove Compartment On the Left Side
6. Radio -R- behind the left luggage compartment side trim panel
7. Digital Sound System Control Module -J525- behind the luggage compartment left side trim
8. CD Changer -R41- in glove compartment
9. External Audio Source Connection -R199- (AUX IN jack) in the center console storage compartment

MMI maximum equipment

• The Information Electronics Control Module 1 -J794- in the instrument panel holds the CD player/DVD player/navigation system/Bluetooth car telephone/SD memory card reader.
• internal hard drive disc storage (HD) for storing navigation data and MP3 files
• Multimedia System Control Head -E380- in the center console
• Front Information Display Control Head -J685- in center of the instrument panel
• CD Changer -R41- in glove compartment, (7A6)
• Optional External Audio Source Connection -R199- (interface) in the glove compartment (UF7)
• External Audio Source Connection -R199- (AUX IN jack) in the center console storage compartment
• Digital Sound System Control Module -J525- in the luggage compartment on the left rear side
• Sound system: Standard/Bang & Olufsen (9VD/9VK)
• Radio -R- inside the luggage compartment, on the left side and in the rear (8YQ)
• Digital Radio -R147- integrated in the Radio -R- (QV3)
• TV Tuner -R78- in the luggage compartment on the left rear side (QU7)
• Optional cell phone preparation (9ZF)
• Optional Bluetooth hands-free calling (9ZX)
• Optional Bluetooth car telephone (9zw)
• Optional multifunction steering wheel
• WLAN (From MY 2012) UE2

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1. Multimedia System Control Head -E380- in the center console
2. GPS Antenna -R50-
3. Front Information Display Control Head -J685- in center of the instrument panel
4. Telephone Antenna -R65-
5. Microphone Unit in Front Roof Module -R164- (Left Front Microphone -R140-) in the Front Interior Lamp -W1-
6. Telephone Baseplate -R126- inside the center console storage compartment
7. Information Electronics Control Module 1 -J794- inside the instrument panel
8. MOST bus
9. CVBS cable
10. CD Changer -R41- in glove compartment
11. TV Tuner -R78- behind the left luggage compartment side trim panel
12. External Audio Source Connection -R199- (AUX IN jack) in the center console storage compartment
13. Radio -R- behind the left luggage compartment side trim panel
14. Digital Sound System Control Module -J525- behind the luggage compartment left side trim
15. Data Bus On Board Diagnostic Interface -J533- Behind the Glove Compartment On the Left Side
16. not installed

The MOST bus performs the system data exchange in the MMI.

The connection to the other data bus systems in the vehicle are provided by the Data Bus On Board Diagnostic Interface -J533-.

Fault finding is performed via"Guided Fault Finding"  using the Vehicle Diagnostic Tester.

Information Electronics Control Module 1 -J794- overview

Information Electronics Control Module 1 -J794- is a 3rd generation MMI. Depending on the equipment level, the Information Electronics Control Module 1 -J794- contains the following known control modules from the 2nd generation:

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1. Front Information Display Control Head Control Module -J523-
2. CD Player -R89-
3. Navigation System with CD Drive Control Module -J401-
4. Telephone Card Reader -R115- /SD card reader
5. not installed
6. Telephone Transceiver -R36- (cell phone preparation)

   - Bluetooth hands-free equipment

7. Telephone Transceiver -R36- (Bluetooth car phone)
8. Internal hard drive (HD) disc storage
9. Information Electronics Control Module 1 -J794-

Radio -R- Components, MMI 

Depending on the equipment level, the Radio -R- contains the following known 2nd generation control modules:

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1. Digital Sound System Control Module -J525- (basic plus/standard)
2. Radio -R-
3. Radio -R- AM/FM-Tuner
4. Satellite Radio -R146- (only USA)
5. Digital Radio -R147-

MOST Bus Overview

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1. Front Information Display Control Head -J685-
2. Information Electronics Control Module 1 -J794-
3. MOST bus
4. CD Changer -R41-
5. TV Tuner -R78-
6. Radio -R-
7. Digital Sound System Control Module -J525-
8. Data Bus On Board Diagnostic Interface -J533-
9. Multimedia System Control Head -E380-

Notes on MOST bus

The optical Data bus "MOST bus" is used in addition to the CAN bus.

A fiber-optic cable is used as a "connecting cable". Fiber optic cables are routed inside corrugated tubes for protection.

Replace complete fiber optic cable if possible.

Make sure that the face surfaces of the connectors do not become soiled.

If disconnecting the connectors: Attach Fiber-Optic Repair Set - Connector Protective Caps :VAS6223/9  .

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When installing fiber optic cables, make sure not to go below the minimum bending radius of 25 mm. Do not crush or kink fiber optic cables.

Repairing fiber optic cables, refer to FIBER-OPTIC CABLES, REPAIRING .